Allow to specify extra settings used by AGIC on addonProfiles

[brwilkinson]

Current addonProfile IngressApplicationGateway available settings

        "addonProfiles": {
            "IngressApplicationGateway": {
                "enabled": true,
                "config": {
                    "applicationGatewayName": "AEU1-PE-CTL-D1-waf01",
                    "effectiveApplicationGatewayId": "/subscriptions/4185fa9b-f470-466a-b3ae-8e6c3314a543/resourceGroups/AEU1-PE-CTL-RG-D1-aks01/providers/Microsoft.Network/applicationGateways/AEU1-PE-CTL-D1-waf01",
                    "subnetCIDR": "10.182.241.0/24"
                }
            }

1) Add subnet name setting

current behavior

Currently we have to name the subnet '${AppGatewayName}-subnet'

desired behaviour

Add an extra property to specify the name of the desired subnet to use. E.g. subnetName

        "addonProfiles": {
            "IngressApplicationGateway": {
                "enabled": true,
                "config": {
                    "applicationGatewayName": "AEU1-PE-CTL-D1-waf01",
                    "effectiveApplicationGatewayId": "/subscriptions/4185fa9b-f470-466a-b3ae-8e6c3314a543/resourceGroups/AEU1-PE-CTL-RG-D1-aks01/providers/Microsoft.Network/applicationGateways/AEU1-PE-CTL-D1-waf01",
                    "subnetCIDR": "10.182.241.0/24"
                    "subnetName": "snWAF01"  // <--- Allow for these 2 extra settings    \/
                    "WAF_V2_PolicyId": "/subscriptions/4185fa9b-f470-466a-b3ae-8e6c3314a543/resourceGroups/AEU1-PE-CTL-RG-D1/providers/Microsoft.Network/ApplicationGatewayWebApplicationFirewallPolicies/AEU1-PE-CTL-D1-wafAGIC01-policy"
                }
            }

2) Add WAF Policy settings

current behavior

Always deploys app gateway as "Standard_V2"

desired behaviour

Add an extra property to specify the WAF Policy Id, then deploy "WAF_V2" e.g. WAF_V2_PolicyId

[ptalekar-intel]

You could create your own Application Gateway with WAF V2, put it in the desired subnet, and then create the Managed Cluster. Attach the App Gateway while creating the managed cluster.